Carolina Panthers owner David Tepper, left, talks with head coach Ron Rivera, right, before a preseason NFL football game against the Miami Dolphins in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Carolina Panthers' Christian McCaffrey, left, runs past Miami Dolphins' T.J. McDonald, right, for a touchdown in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Carolina Panthers' Cam Newton (1) is sacked by Miami Dolphins' Robert Quinn (94) in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Carolina Panthers' Cam Newton (1) scrambles away from Miami Dolphins' Cameron Wake (91) and Davon Godchaux (56) in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Miami Dolphins' Xavien Howard (25) returns an interception past Carolina Panthers' Greg Van Roten (73) in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Miami Dolphins' Kenyan Drake (32) runs past Carolina Panthers' Shaq Green-Thompson (54) in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Carolina Panthers' Devin Funchess (17) and Miami Dolphins' Xavien Howard (25) battle for a pass in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Carolina Panthers' Ian Thomas (80) runs past Miami Dolphins' Reshad Jones (20) for a touchdown in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Miami Dolphins' Ryan Tannehill (17) looks to pass against the Carolina Panthers in the first half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Carolina Panthers' Taylor Heinicke (6) looks to pass against the Miami Dolphins in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Carolina Panthers' Kenjon Barner (38) is hit by Miami Dolphins' Maurice Smith (26) in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Carolina Panthers' Taylor Heinicke (6) scramble away from Miami Dolphins' Charles Harris (90) in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Carolina Panthers' Cam Newton (1) celebrates a Panthers touchdown against the Miami Dolphins with teammates in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Miami Dolphins' Senorise Perry (34) runs past Carolina Panthers' David Mayo (55) in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)

Miami Dolphins' Buddy Howell (38) runs as Carolina Panthers' Demetrious Cox (36) pursues in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Miami Dolphins' Buddy Howell (38) is tackled by Carolina Panthers' Demetrious Cox (36) in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Nell Redmond)

Miami Dolphins' Leonte Carroo (88) is puchshed out of the end zone by Carolina Panthers' David Mayo (55) in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. Carroo was ruled out of bounds on the play. (AP Photo/Mike McCarn)

Carolina Panthers' Elijah Hood (30) runs past Miami Dolphins' Claudy Mathieu (60) for a touchdown in the second half of a preseason NFL football game in Charlotte, N.C., Friday, Aug. 17, 2018. (AP Photo/Mike McCarn)